Lenovo 4428-AB1 manual Troubleshooting, Problem Possible cause Suggested action Reference

Table 3-1. Monitor specifications for type-model 4428-AB1(continued)

Humidity	Operating	10% to 80%
	Storage	5% to 95%
	Shipping	5% to 95%

Troubleshooting

If you have a problem setting up or using your monitor, you might be able to solve it yourself. Before calling your dealer or Lenovo, try the suggested actions that are appropriate to your problem.

Table 3-2. Troubleshooting

Problem	Possible cause		Suggested action		Reference
The words ″Out	The system is set		v If you are replacing an		“Selecting a supported
of Range″ are	to a display			old monitor, reconnect	display mode” on page
shown on the	mode which is				2-5
				it and adjust the
screen, and the	not supported by
				display mode to within
power indicator	the monitor.
				the specified range for
is flashing blue.
				your new monitor.
			v	If using a Windows
				system, restart the
				system in safe mode,
				then select a supported
				display mode for your
				computer.
			v If these options do not
				work, contact the
				Customer Support
				Center.
The image	The video signal		Be sure the signal cable is		“Connecting and turning
quality is	cable is not		firmly plugged into the		on your monitor” on
unnacceptable.	connected with		system and monitor.		page 1-3
	the monitor or
	system
	completely.
	The color		Select another color		“Adjusting your monitor
	settings may be		setting from the OSD		image” on page 2-3
	incorrect.		menu.
	The automatic		Perform automatic image		“Adjusting your monitor
	image setup		setup.		image” on page 2-3
	function was not
	performed.
The power	v	The monitor’s	v	Be sure the power cord	“Connecting and turning
indictator is not		power switch		is connected properly.	on your monitor” on
lit and there is					page 1-3
		is not	v Be sure the outlet has
no image.
		switched on.		power.
	v
		The power	v Power on the monitor.
		cord is loose	v	Try using another
		or
				power cord.
		disconnected.
			v	Try using another
	v	There is no
				electrical outlet.
		power at the
		outlet.

3-2Flat Panel Monitor User ’sGuide